Where does unsold artwork go?

So this question has been bugging me and I'm wondering if anyone here might have some insight! What happens to artwork that is unsold at Disneyland? I've been eyeing a few "limited" edition pieces that are $750 and up (out of my price range). Do they just keep it out until it finally sells? Do they discount it somewhere else? Do they sell it to cast members? What does it go if it doesn't sell?